218454551

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{661}}^1\times {\mathrm{1523}}^1$

素因数の和:2222

約数の個数: 16

約数和(自身を含む): 258275328

約数和(自身を除く): 39820777

約数列:

[1, 7, 31, 217, 661, 1523, 4627, 10661, 20491, 47213, 143437, 330491, 1006703, 7046921, 31207793, 218454551]

約数ペア:

[(1, 218454551), (7, 31207793), (31, 7046921), (217, 1006703), (661, 330491), (1523, 143437), (4627, 47213), (10661, 20491)]